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Home >> Ford >> 2002 >> Excursion 7.3 F, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Diagnostic Procedures - Trucks - Diesel >> Fuel System >> Fuel Pressure >> Fuel Pressure Test
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Fuel Pressure Test

  1. On Econoline, remove doghouse cover and remove 1/8" pipe plug from top of left head. On Excursion and Pickup, remove 1/8" pipe plug from top front of right head. On all models, install Gauge Bar (014-0061). Run engine at idle and check for leaks from line and gauge. Measure pressure with full load on engine. If pressure is not 45-80 psi (310-552 kPa), replace fuel filter. Recheck fuel pressure, if fuel pressure is still less than specification, replace left head check valve on Econoline or right head check valve on Excursion and Pickup. Check valve is located between fuel inlet line and cylinder head.
  2. On Econoline, remove alternator and bracket if necessary. Remove 1/8" pipe plug from top front of right head. On Excursion and Pickup, remove 1/8" pipe plug from top rear of left head. On all models, install Gauge Bar (014-0061). Run engine at idle and check for leaks from line and gauge. Measure fuel pressure with full load on engine. If fuel pressure is not 45-80 psi (310-552 kPa), replace right head check valve on Econoline or left head check valve on Excursion and Pickup. Check valve is located between fuel inlet line and cylinder head.
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